Aftermarket automobile engine exhaust systems comprised of pipes, collectors, mufflers, particulate traps; Air-cooled condensers; Air condensers; Clutches other than for land vehicles; Clutches and apparatus for power transmission other than for land vehicles; Compressors for machines; Cylinder heads for engines; Engine exhaust system comprised of a particulate trap; Exhaust manifold for engines; Fans for motors and engines; Filters for cleaning cooling air, for engines; Flues for engine boilers; Gas diverters consisting of a pump, storage and refilling tank, pre-heater, vaporizer, recuperator, condenser and valves; Heat exchangers being parts of engines not for land vehicles; Heat exchangers being parts of machines; Internal combustion engines land vehicle parts, namely, coils; Internal combustion engines land vehicle parts, namely, distributor caps; Internal combustion engines land vehicle parts, namely, distributor rotors; Internal combustion land vehicle engine parts, namely, connecting rods; Machine parts, namely, hoods; Nitrogen oxide traps for exhaust systems being parts of internal combustion engines; Radiators for motors and engines; Radiators for motors and engines; Radiators for vehicles; Steam engine boilers; Steam engine boilers for power generation, other than for land vehicles; Vehicle engine parts, namely, oil tank plugs and caps; Cooling radiators for motors and engines; Mechanical condensators